The City of Detroit is posting billboards around town to remind people that new municipal identification cards are available for those who have difficulty getting state drivers licenses or other forms of ID, including homeless people and undocumented immigrants.

The billboards will go up at 30 locations in Detroit and have already appeared near I-96 and Grand River, Greenfield and Davison, Gratiot and Bessemore, Harper and Eastlawn and other locations. The sign space was donated by the outdoor media company Outfront Media at no cost to the city.

City officials launched the municipal ID program, approved by Mayor Mike Duggan and the City Council, last week to help Detroiters gain access to city services, more easily interact with the Detroit police and health departments, Detroit public schools and other public and private organizations in the city. More than 100 organizations are offering discounts and other perks to the municipal card holders, including AMC Theaters, Buddy’s Pizza and the YMCA.

Residents interested in a Detroit ID card may call 1-800-408-1599 to schedule an appointment and hear about required documentation and other issues. Homeless people, for one, may use the address of a shelter to get an ID.

ID intake centers are at Patton Recreation Center, 2301 Woodmere on the southwest side, and Samaritan Center, 5555 Conner on the city’s east side. Hours are 1-7 p.m. Mondays and Wednesdays and 10-6 Saturdays. The IDs cost $25 for people ages 18-61, $10 for ages 14-17 and 62 or older.